Dishwasher and method of controlling the same

Abstract

A controlling method of a dishwasher is provided. The method includes a selecting of a wash cycle and inputting of command settings by a user, starting operation of the dishwasher according to the selected cycle and driving a wash pump and discharge member, and controlling the dishwasher during the cycle to end the wash cycle with an upper arm operating.

1. A controlling method for a dishwasher, comprising:
 selecting a wash cycle by a user and inputting operation commands; 
 beginning a cycle according to the selection of the wash cycle and operating a wash pump and a discharge member, the discharge member switching between an upper arm and a lower arm, the switching of the discharge member between the upper arm and the lower arm occurring at least once; 
 determining by a controller whether the switched discharge member is the upper arm after elapsing predetermined time from beginning the wash cycle; 
 switching the discharge member to the upper arm when the determined discharge member is the lower arm; 
 operating the upper arm for a setting time; 
 finishing the wash cycle after operating the upper arm for a setting time; and 
 operating other cycles if the wash cycle has been completed. 
 
     
     
       2. The controlling method of  claim 1 , wherein the operation of the discharge member has a running time depending on the operation of the wash pump. 
     
     
       3. The controlling method according to  claim 1 , wherein operating the wash pump and the discharge member includes switching the discharge member by the controller when the running time of the wash pump reaches a first setting time. 
     
     
       4. The controlling method according to  claim 3 , further comprising operating a switched discharge member from the time of switching the discharge member until the running time of the wash pump reaches a second setting time. 
     
     
       5. The controlling method according to  claim 4 , wherein the determining operation is performed when the running time of the wash pump reaches the second setting time.